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-
- UK AMPRNET TCP/IP Newsletter
-
-
- Mike Chace - G6DHU
-
- Issue 1 Volume 1 - January 1991
-
-
- 1. Introduction
-
- Hello and welcome to this first issue of the TCP/IP
- Newsletter for the UK AMPRNET community.
-
- You've probably realised the size of the hosts.net file
- these days! But then you probably realised how few of those
- stations allocated addresses are on air for some time - let
- alone 24 hours. I hope to fulfill the following aims in
- starting the newsletter.
-
- Disseminate information on UK AMPRNET topology
- Increase connectivity of the UK AMPRNET
- Announcements of new software releases
- Operating experiences
- Software bug fixes and enhancements
- Information on how to obtain software and hardware
- News on address allocations
- Beginner's help - Problem Clinic and tutorial material
- General news and discussion
-
-
- I hope that the newsletter will be of interest to those
- already using TCP/IP and those who are interested in making
- the move to Amateur Packet Radio TCP/IP.
-
- Of course, to do all these things requires time and I
- propose to produce the newsletter on a bi-monthly basis.
- Hopefully, that should also allow enough time to gather the
- information and articles which will of course come flooding
- in !?
-
-
- Distribution
-
- As one of the principle aims of the newsletter will be to
- increase the connectivity between IP clusters - I'm hoping
- to distribute as much of the text as possible via SMTP.
- Newcomers to the mode could also receive a copy of the
- current newsletter on being allocated their address.
-
- Some of you reading this will be priviledged enough to be
- contactable on one of the larger computer nets eg JANET,
- Internet. If your local subnet is isolated then please tell
- me your e-mail address and you can act as a local
- distributor via e-mail. For the time being I will distibute
- the newsletter via the UK NTS BBS network.
-
- At the moment I'm using the well known Unix 'nroff' text
- formatter (ported to the Atari ST) to produce the
- newsletter. It provides a neat presentation with the added
- bonus that pretty hard-copy is also available. The
- newsletter will (initially) be distributed as nroff output.
- If there is enough interest in receiving the nroff source
- then I could mail this too.
-
-
- 2. UK AMPRNET Topology
-
-
- What can you do to help ?
-
- Currently the UK AMPRNET seems to be a set of fairly
- distinct and localised IP clusters. With Phil Karn's
- NET/NOS programs now some years old and stable perhaps we
- should be thinking of using the power inherent in TCP/IP and
- begin to link these clusters.
-
- Most of us are fortunate in having a well-connected NET/ROM
- network close at hand. Granted, it's probably (very ?) busy
- at times but we need to use the network as it stands. In
- order to know more about how to set up these links we need
- to know more about each others local NET/ROM connectivity
- and I intend this newsletter to provide that information.
- In doing so I will need your help. As an example of the
- sort of details I expect, I have included a NET/ROM topology
- of my local area.
-
- I'm not suggesting you copy the format but I can't think of
- a better way in which to present it.
-
-
- Topology of the Bath/Bristol IP Cluster (Subnet 20)
-
- Bristol Bath
-
-
- WRW:GB7FC---------AQUSUL:GB7UX-2 ----\
- | | \
- | | \
- + TCPWRW:G4WRW-4 + BATH:G6DHU-5 TCPOTJ:G4OTJ +
- |
- |
- TCPJQD:G4JQD +
-
-
- + Indicates 24hr (or near!) station.
-
- The 144.650 Trunk Network nodes are GB7FC and GB7UX-2
-
-
-
- Additional Information
-
- Local Stations - Subnet 20 are :
-
- G4WRW - Dave - 44.131.20.2 - G1EMM NOS
- G6DHU - Mike - 44.131.20.3 - PE1CHL NET
- G4OTJ - John - 44.131.20.4 - G1EMM NOS
- G4JQD - Chris - 44.131.20.5 - G1EMM NOS
-
-
- Connectivity
-
- All IP activity is across NET/ROM and all 2m based. G4WRW-4
- and G6DHU-5 use 144.650 with G4OTJ being a 144.650/675
- gateway.
-
-
- Planned
-
- We hope to link our cluster to G1WKK in Basingstoke via a
- rather long (and precarious) NET/ROM route which has been
- proven to work during recent tests.
-
- A link to G0BSX in Sheffield from G4WRW may also be possible
- hence linking London to Sheffield via Bath.
-
- A link to Plymouth will be possible when a 23cms link across
- the Mendips from Bristol/Bath is established. (Planned by
- SWAX (North) Group)
-
- I hope that helps as a guide to the sort of information
- required. Of course, just a verbal decription would be
- equally appropriate - assuming that interested readers can
- draw a topology themselves.
-
-
- 3. Software
-
-
- PE1CHL NET Version 900710
-
- This IP software is a must if you are an Atari ST
- user/owner. A version is also available for the PC clones
- (80xxx) and for XENIX boxes.
-
- A much enhanced version of the last of the NETs it features
- extras such as ;
-
- AX.25 Mailbox
- NET/ROM clone (with full user level access)
- Conference Bridge (Chat Node)
- KA-Node clone
- MHeard server
- TNC2 emulator
- Multi-channel KISS (eg KPC4) support
- Remote command processor
- Remote Login client/server
-
- The AX.25 mailbox is capable of forwarding and
- reverse-forwarding. W0RLI type scripts can be written to
- deliver mail to PMSs and NTS Mailboxes which allows you to
- prepare mail for locals still on L2 in the comfort of BM
- etc.
-
- The NET/ROM node can be configured to act as an IP
- interlinking gateway by recognising a programmed node alias
- (eg #TCPIP). The node has full user level functionality
- and can be crossbanded with nothing more difficult than an
- extra line in the autoexec.net file. In fact, all servers
- can be configured in the same way to be accessible from any
- interface/band.
-
- The TNC2 emulator is an interesting server which allows
- users to connect to the system and effectively spawn a
- process running the TAPR TNC2 1.1.7 code. Not much use as
- such but it comes into it's own when connecting to a BBS on
- the machine or running KISS on top of the already running
- NET program!
-
- The remote login facility allows password protected access
- to a command interpreter which effectively puts the remote
- station at the keyboard of the local station. A UDP
- 'remote' server is also implemented as in KA9Q NOS. A
- software watchdog circuit is also included which will reboot
- the machine and run NET in the case of either a NET or shell
- hang/crash. These features, together with the great
- stability of this program, make it ideal for a
- multi-function node for AX.25/NET/ROM and TCP/IP users.
-
- PE1CHL NET also has software support for the OptoSCC card
- (see PA0HZPs paper in the 8th CNC Proceedings). This
- interfaces to the ST midi port and allows TNC-less
- operation, on upto 8 multi-frequency/data-rate channels.
-
-
- Availability
-
- The PE1CHL software is available from (Paul) G1PLT (@ GB3XP)
- who also maintains and enhances the program, or myself.
-
-
- MacNET
-
- I have the latest version of Doug Thom's (N6OYU) enhanced
- version of NET for the Apple Macintosh series of computers.
- It includes NET/ROM support, the standard W9NK AX.25 mailbox
- and split-screen trace. It can also be configured to access
- a remote machine/ file server via the Appletalk
- networking/bus system.
-
- Since starting this newsletter, I hear that Doug has now
- ported NOS to the Mac and this is now being distributed. I
- hope to bring you further details in a later issue.
-
-
- G0BSX W0RLI <-> SMTP Server
-
- Contact Peter (G0BSX@GB7BSX) or myself for the latest
- sources and executables for this server for the IBM-PC. The
- system allows direct mail forwarding from SMTP to W0RLI and
- vice-versa.
-
-
- 4. Beginner's Help
-
-
- Beginners Documentation Package.
-
- This package is distributed by myself on a 3.5 inch floppy
- in Atari ST, IBM-PC or Macintosh formats. The package
- currently contains text versions of the following documents
- ;
-
- The NOS User Reference - Phil Karn (KA9Q)
- The NET TCP/IP Beginners Guide - Gary Ford (N6GF)
- TCP/IP and NET/ROM Tutorial - Dan Frank (W9NK)
- The KISS TNC Standard - Phil Karn et al.
- Introduction to TCP/IP - Charles Hedricks - Rutgers
- University
-
- I have suggested to Dave (G4CLI), our Address Coordinator,
- that we can offer this package to newcomers when they
- receive their address allocation.
-
-
- 5. Newcomers Operating Experience
-
- I asked one of the local IP operators, John (G4OTJ), to give
- me a quick run down on what he had done in switching to
- NOS.....
-
- Packet radio had become boring. I was seriously considering
- giving it up and concentrating on ATV again but then I heard
- about TCP/IP. I obtained a copy of NET which was about three
- years old and as I soon discovered full of bugs. Anyway I
- got it going and with loads of help from Mike G6DHU managed
- to send some mail to Chris G4JQD (who I persuaded to engage
- KISS mode for a while),Mike and Dave G4WRW.
-
- I was soon supplied with a recent version of NOS (April
- 90ish) which enabled me to swap files a FTP didn't work on
- the old version of NET. I have since added a second rig and
- TNC and have a gateway operative between 144.650 and
- 144.675.
-
- I have modified my computer (an Opus PC2 XT clone) to allow
- me to switch off the power to the hard disks and I normally
- leave it running just on the B: drive, a 720k floppy. There
- isn't a great deal of activity in the area but hopefully
- links will be made or found to other areas and at that point
- the interest will increase enormously. I have nearly
- established a TCP/IP station at the radio club at work.
- G4HTV-5 has been seen on 144.65 but until I finish building
- the PSU for the rig it will be off.
-
- I have just bought a pcb for a 9600 baud modem and hope to
- have a port operating on another frequency, probably in 2
- metres, using that mode.
-
- One thing is certain, TCP/IP isn't boring. It is going to
- take some time for me to even find all the commands let
- alone understand them!
-
- John (G4OTJ)
-
-
- 6. Help for new users of IP
-
- How many messages have you seen on the mailbox network these
- days asking questions such as 'What is TCP/IP' or 'HELP! I
- can't get it going' ?
-
- It seems to me that a great number of stations have the
- hardware available to run TCP/IP - let's not forget that NET
- or NOS now run on PCs, Atari ST, Amiga and the Macintosh
- (Any news about the Archimedes port ?!). I'm not really sure
- what spurs most people into trying TCP/IP but I'm quite sure
- that many people are in dire need of some education and help
- as they start to use the NET or NOS software. The TCP/IP
- Beginner's Guide by Gary Ford (see above) makes a pretty
- good attempt at the sort of document we need to support the
- software but even that only goes as far as making
- connections with AX.25.
-
- Perhaps someone reading this has written, or is in the
- process of writing a comprehensive user guide for NET or
- NOS. If so, then please tell me. I'm sure that this
- newsletter would be a good forum for such discussions. Let
- me know what YOU think is needed. I am quite sure that a
- good manual will greatly increase the numbers on IP beyond
- those that pass the initial stages of setting the gear up
- and then find difficulty when having to route across NET/ROM
- to reach another IP node.
-
-
- 7. Newsflash !
-
- A US/Canadian packet group have been experimenting with a
- new 9600bps modem design based on the Yamaha 7109 FAX chip.
-
- What's new ? Well, the modem works without modification to
- your radio equipment. It's early days but a number of
- popular radios have been tested with the modem and the
- results seem encouraging. Two main stations have undergone
- extensive tests with 2m handies using the modem for AX.25
- mailbox access and FTP.
-
- More news on this in a later issue.
-
-
- 8. 221 Closing....
-
- I hope you found this first issue informative and support
- it's aims. Please send suggestions and articles for
- inclusion to me at the following addresses ;
-
- 84 Frankland Close
- Bath
- Avon
- BA1 4EL
-
- or via e-mail (mikec@praxis.co.uk), AMPRNET g6dhu.ampr.org
- [44.131.20.3] or AX.25 NTS BBS (G6DHU@GB7IMB).
-
- I can accept material on 720k IBM/MS-DOS and Atari ST 3 1/2
- inch format disks and if you want them back PLEASE include
- the return postage.
-
- All material greatfully received!
-
- 73, Mike
-
-